Improvement in car-axles



G. W. MILTIMORE.

CAR-AXLE.

Patented J'an.4,18'76 WITNESSES uniform width, as the axle A is constructed UNITED STATES PATENT OFFICE.

GEORGE W. MILTIMORE, OF JANESVILLE, WISCONSIN.

IMPROVEMENT IN CAR-AXLES.

Specification forming part of Letters Patent No. 171.835, dated January 4, 187 6 application filed June 19, 1875.

To all whom it may concern Beit known thatI, GEORGE W.MILT1M0RE,

of Janesville, in the county of Rock and State of Wisconsin, have invented a new and Improved Gar-Axle, of which the following is a specification The ,object of my invention is to improve the car-axles in such a manner that the con struction and working of the same maybe simplified, the wear of leather packing-rings on the stationary axle prevented, and the weakening of the axle by oils-ducts, &c., bored through the same, be done away with. The

supply of the lubricant through the pedestalfront end of the cushioned journal-box, and

excludes impurities. The oilis supplied by grooves or channels of the stationary sleeve and the steel ring from an annular oil-reservoir of the pedestal-box, which is again connected by an inclined channel with a cavity, into which the oil is tilled through a top hole, closed by a conical spring-plug, sliding on the vertical pin connecting axle and pedestalbox.

- In the accompanying drawing, Figure 1 represents a vertical central section of my improved car-axle,'showing the construction of the different parts; and Fig. 2 is an end view of sleeve, showing connection of the samewith stationary axle.

Similar letters of reference indicate corresponding parts.

A represents the stationary axle, which is connected to the spring or pedestal bearers or boxes B by vertical fastening-pins a. O is the outer revolving axle or sleeve, which forms around the stationary axle an oil-reservoir of Without projecting shoulders of even thickness throughout. The journal-box D revolves with the sleeve on the axle, being cushioned by an annular Wedge-shaped sleeve-ring, D, of wood, interposed between sleeve and box. and retained by face-flanges of the same, as shown in Figs. 1 and 2. The cushioning-sleeve furnishes a more elastic connection of the journal-box with the outer sleeve. The wheels are set loosely on the sleeve, and revolve with the same, except when passing arounda curve;

or, when there is a slight difl'erence in the diameters of the Wheels, they turn on the sleeve to the same extent that they would slip on the track when rigidly applied to the axle. A

tached along its outer circumference by a' flanged screw-nut, d, to the sleeve 0, forming thus an annular reservoir around the sleeve B. The diaphragm is made bulging, to produce acertain degree of flexibility for the varying positions of the outer sleeve 0 and of the metallic revolving rings. The rings b and b revolve with the outer sleeve 0 on the sta tionary sleeve B, which is fitted to carry the same. The sleeve B has a conical projecting rim, 0, on which slides a ring, 0, of triangular cross-section, that is placed within the cavity formed by the rings 1) b, and acted upon'by spiral springs f, seated in socket-recesses of the outer ring D. The springs press the sliding ring 0 along the inclined plane of the projecting rim 0 in forward direction on the interior ring, preventing the escape of oil while furnishing a sutlicient quantity to the ringcavityv from the diaphragmreservoir to lubricate the revolving rings of the same. Dust and other impurities are fully kept out by the tight-fitting of the parts on the stationary sleeve. An annular cavity, G, of the. pedestalboxes B around the stationary shaft forms an oil-reservoir, from which, by longitudinal channels orgrooves ot' the stationary sleeve B and of steel ring E, the oil is fed to the journalbox axle and diaph rag'm-reservoir. The pressure of oil on fillin g the difl'erent reservoirs from the oil-cup H of the pedestal-box forces the same throngh thle difi'eren't channels to supply; fully all the parts with oil, so that they can be run for some time without refilling. An inclined channel, g, connects the reservoir G with the oil-cup H, into which the oil is filled through a top hole, h, that isclosed from belowby a conical plug, 1', that slides on the upper end ofpin a, and is forced up .by a spiral spring, 11', seated between plug and a shoulder of pin a.

. By pressing the spring-plug down theoil may be filled in until the reservoir Gisfull,

from which it is conveyed tothe diaphragmreser voir, the journal-box, and the reservoir formed betweelrsleeve and axle. The entire quantity of oil is thus gradually fed to the parts. reqnirin g the same, while no weakening of the a'xle,either by anyparts cutting into the same or by oil-ducts or shoulders, is pro- Having thus described my invention, I claim as new and desire to secure by Letters Patent- 1. In car-axles, the combination of a revolv ing sleeve with a sheet-metal diaphragm, inclosing the journal-box, and t'orming'a supplementary oil-reservoir around the stationary axle, substantially in the manner and for the purpose set forth.

2. The combinatio'nof the sheet-metal diaphragm, attached to the revolving outer axle or sleeve, with the double clamping-rings fitting on the stationary sleeve of the pedestalbox, to prevent escape ofoil from diaphragm-- reservoir and entering of jilust, substantially as set forth.

3." The combination of revolving diaphragm clamping rings, inner spring acted sliding ring, stationary sleeve, and stationary steel ring with journal-bo z of stationary axle, subi G. W. MILTIMORE.

Witnesses:

PAUL GOEPEL, R. H. Moams. 

